v3.25.4
NATURE OF OPERATIONS (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 31, 2026
Jan. 01, 2026
Mar. 06, 2024
Mar. 17, 2022
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2021
Sep. 30, 2024
Oct. 01, 2021
NATURE OF OPERATIONS                    
Net proceeds     $ 35,286   $ 35,800   $ 35,286 $ 25,400    
Demonstration plant project budget           $ 53,600     $ 53,600  
Amount of potential DoE funding                   $ 21,900
Cash and cash equivalents           19,315 26,732      
Cash used in operations           7,121 10,619      
Percentage of total estimated cost for the project covered by DoE funding                   0.50%
Expected monthly on-going cost of the Demonstration Plant during 2026           77,500        
Net proceeds of rights offering           30,500        
General Atomics                    
NATURE OF OPERATIONS                    
Demonstration plant project budget       $ 53,600   $ 53,600 $ 53,600      
Demonstration plant project budget increase percentage       22.00%   22.00%        
Demonstration plant project original budget       $ 43,800   $ 43,800        
Additional cost-share funding       $ 2,400   2,400        
Amount of potential DoE funding           24,200        
Projected operating cost           $ 77,500        
Subsequent Event                    
NATURE OF OPERATIONS                    
Net proceeds $ 30,900 $ 30,900                
Bear Lodge REE Project                    
NATURE OF OPERATIONS                    
Ownership interest (as a percent)           100.00%        
Sundance Gold Project                    
NATURE OF OPERATIONS                    
Ownership interest (as a percent)           100.00%